Bag-frame fastener



Y 1936- w. H. ZACHMAN 2.

BAG FRAME FASTENER Filed Sept. 26, 1934 Invenifo z".-

zijl illym Hifzachman. '6 fifty.-

Patented July 21, 1936 2,048,532 BAG-FRAME FASTENER WilliamH. Zachman, Woodhavem N. Y., assignor =to Unlte'd- Carr Company, lnc.,"Brooklyn, N. IY.,.

a corporation of New York ApplicationSeptember 26, 1934, Serial No. 745,533

5 Claims. ((1292- 228) UNIT-FED STAT-ES PATENT L-OFFICE My invention aims to provide improvements in fasteners for bag-frames of the type having channel members of U-shaped cross-section.

In the drawing, which illustrates a preferred form of my invention:

Figure 1 is a top view of thefastener showing sections of the frame in the closed position;

Fig. 2 is a section on the line 2-2 of Fig. 1;

Fig. 3 is a rear view of the latch member and its supporting plate;

Fig; 4 is a bottom viewof-the.latchlmember as shown in Fig. 3;

Fig. 5 is a perspective view of part of abag frame in the open position,.. showing the coacting partsof my improved fastener; and g Fig. 6 is a perspectiveview of thefastener and .supportingplate showing the construction of the spring and thehinged assembly oft-the ,parts.

My improved fastener. isadapted particularly, :though notexclusively, for use withlaframeof the type illustrated. JIhat is, .a frame -made .from; material of .U-shaped -.crossesection and having upwardly, rather than downwardly, extendingside-walls. .Thespecificfiformf my invention, as illustrated, comprises .a..supporting ,plate I, a latch 'member .2 .pivotally .mounted thereon,.and a springf3 for-actuating .the.mem- .ber.2. The supportingplate liissecured tothe frame ..member 4. A cooperating catch spiece 6 .is secured to the secondframemember 5, all \as shown in Fig. 2. The supporting platell is preferably-made. from rigid sheet metal andQis, provided with .a .pair of attaching lugs .1 extending from one edge. 'These lugs -1 havelbifurcated ends which are spread apart after .-.the lugs. are inserted in properly sized apertures in theiframe, thus .making a secure assembly. At the other side of the plate "I is a relatively wide flat projection 8 having a pair of rectangular apertures 9. I have located these apertures 9 so that they lie on a line parallel to that side of the plate from which extend the lugs I and far enough from that side so that they will be located above the side wall of the frame member 4 (Fig. 3) when the plate is secured to it.

The latch member 2 is made from sheet metal and is of box-like construction, having a rear wall In, and side walls II. The flat top is curved slightly upwards near the front end, as best shown in Fig. 2. Instead of an upright wall at the front side of the latch, I have provided a. relatively long, rearwardly disposed lip l2, which extends back toward the rear wall l0 and is spaced from the main part of the latch. This lip I2 is curved approximately the same as the main plate (Fig. -2) sothat when the two parts of -the frame are pushed together the lip will act asacam with the .catch-piece'fi, causing the .latch to ride up over the catch .until the frame -is-completelyclosed and the rear edge of the ip 5 J2 snaps down (over the catch-as in' Fig.;2. I

From the edge of therear wall III-extend apair of lugs Iiwhich serve toattach theljlatchmemher to the supporting plate I. -,When assembled, the-supporting plate-I extends up into the latch 10 member .inside the rear :wall. l0 and almost. to the top=of thelatchmember. .The projectionQB isapproximatelyas wide as the inside dimension 'of'the'latch memben-so thatthe rear endjof the .-latch*member, is well. supported. The lugs 1.3 are l5 'gpassed through the aperturesS and bentLupward- 1y, :thereby forming hinges, as is bestshown in Fig.6. 'By the construction of these (hinges and the relation betweenthe reariw'all .IO and the projection r8 the motion-- of the latch. member. is "limited to aa rather shortarc, .whichlis .veryde- .-sirable inasmuch asthe latchLmember can .never -fall below thetpointwhere it fwillbe acted .upon 'by-the catch .6 when the frame is being closed.

In -order to make-the latch member snap down over the catch-piece, I have assembledin the -latchmemberthe wire-spring 3. .Thiss'pring ex- ;tends from outsidethe supporting plate l, against which it bears (Figs. 4 and 6), upintothellatch -member'Z, across thelatch membernear'the plate.

I,- and the other end bearsdownwardlyon :the

-lip [2. This. spring ,is held in place. solelyby. its

aown tension on-the component parts -of the latch and .acts ras a torsion spring to press the. latch member downwardl-yso that it will always engage -the.catch-*6 except when -.purposely ilifted;

:; Fromttheabove descriptionand drawing-,-itwill be seen that the plate I, the latch member 2, and the spring 3 are really a unit. For this reason I prefer to assemble them before attaching the plate to the frame in the manner described above.

The catch-piece 6 (Figs. 2 and 5) is formed. from sheet metal and has lugs I5 of the same type as those on the plate I and used in the same manner. The head of. the catch 6 is formed by bending the material double and making the free end flare outwardly as in Fig. 2. This flared portion acts as a cam to insure a tight closure of the frame jaws.

From the above description it is obvious that my invention provides a very simple and easily manufactured bag-frame fastener. Its operation is simplicity itself,-to close the bag it is merely necessary to squeeze the jaws of the frame together, causing the latch member to be lifted 40 V Tia. pairofr'apertures located beneath -the edge of r against; the action of the spring by the catchpiece and to pivot upwards on'its hinges l3.

When the jaws are fully closed the latch member snaps down over the catch 6, which engages the rear edge of the lip l2. The latch member is held :in that position by the spring 3 until the 'bag is to be opened; then it is only necessary to lift thelatch member at its front 'edgesosthat-it will pivot high enough to disengage' the' catch 6.

While I have illustrated and described appre- V ferred form of my invention, I do not wish to be f limitedbysuch description since the scope of my I invention is best defined by the following-claims. H

'1. 'A fastener for bagframes, and the like com-.' prising a supporting plate having an aperture adjacent to one side thereof, means onsaid plate 'for attaching it to a frame'member, a latch mem t ber comprising a plate having rear andtend walls,"

a rearwardly dispose d.1lip extending from the front edgeigoffthe plate between said end walls,

7 ag pair of ears extending from said rear wall 7 through; the apertures in said supporting plate whereby the latch member'is hinged to the supporting plate and {a wire spring bearing on said 111p, andjth'e outside of saidrsupporting; plate to r hold theilatch member in its normal posltioni V 2. A fastener for'bag frames and the like comprising, in .combination, a rigid supporting plate 7 1 havingga lateral projection at one side 'th ereof andgaplurality of attaching lugs at the other 'side thereqfja latch member formed from sheet 1metajl rand having aplate portion and rear and 55 end walls, a.rearwardlydisposed lip extending 7 from the front edge of said-latch'member in spaced relationship to the plate portion thereof and terminating in a line spaced from saidrear wall,@t he lateral projection of said support extending into said latch member'closely adjacent to the innerrside of said rear wall and presenting 7 said rear wall a pair of bendable earsextending from said rear; wall directly through said aper- V tures'and; bent upwardly on the inner-side of said V supporting plate whereby said'latch'member is hinged to' said'supporting plate,'and a wire spring bearing on said lip and the outside of saidsupnormal position.

porting plate toholdr the-latch member :i'nfits 3. A fastener, for bag-frames and the like comprisinga latch member of substantially rectangu 'larv ,constructionhaving rear and endwalls and arearwardly V disposed lip' extending from the 7 front edge thereof and adapted to engage a catch- 55' ,tending into said latch member closely adjacent piec'e,,a supporting plate having a portion ex .1 the rear wall thereon means on' said, rear'wall whereby said latch member is hingedto said supporting plate and movable in a limited arc, a wire a spring bearing on said rearwardly disposed lip adjacent to one end of the wall of the latch member and extending along theplate portion of the latch member adjacent to the rear wall thereof, and the other end of said spring bearing on the outsideof said: supporting plate whereby said' latch member and said supporting plate are nor- 7 mally held at substantially right angles to one another.

f 4. A fastener for'bag-frames including a plate 'iidapted'tdbesecured toaframe member, said plate having a projecting portion presenting a plurality of apertures therethrough, a latch memberformed. from sheet metal; and having a substantially, perpendicular flange along one end,

f said flange lying outside said projecting portion, ga plurality of bendable ears extending from said flange through the apertures in said projecting portion whereby said latch member is hinged to 's'aidlplate at one end, catch-engaging means provided as'a pa'r't of saidlatch'member for engagement with a cooperatingfcatch member'and a spring assembled with said parts to engage said "latch member and; said plate for normally pressing s'aid 'latchmember into catch-engaging pofii rg if" t 5. A fastener'for bag-framesincluding a plate adapted'to be. secured to a frame member,v said plate having'a portion provided with a plurality] of. apertures" therethroughga; latch Vmember formed'fro'm sheet metal'and having a substan- V tially' perpendicular'flange along oneend, a plurality of bendable earsextending from'said flange through said apertures in 'said plate whereby said lateh member is hinged to said ,plateat one end, a a I lipfe rtending spaced relation to the under side side at which the latch mernberiextends, and said spring havinga portion extending iinto'the latch member inside said flange and. adjacent to one end ef the projection on" said plate, said spring having its mid-portionbent at a right amgle to 1 isaidplate-engaging end portion and "extending V 'falong th e' underside ofsaid latch member adjacent totthefedge of the apertured projection on said plateand the other end of'said sprin'grbeing bent at a" right angle to the mid-portion and bearing downwardly upon said lip whereby: said gaging positionwhen the fastener is attached to a'frame; 1

:of saidlatchmember from the'front edge thereof a toward the hinged end and formingcatch-en- .gaging means and a iwire spring having one end 7 -Vbe'aring on'that side of said plate opposite to the r latch'member is normally pressed into'catch-en- A 

